Spots going fastSeven Seas Mariner vs Viking Sky
Side-by-side cruise ship comparison · Updated January 2026
Seven Seas Mariner offers more personal space with a space ratio of 68.7 GT per passenger versus 51.4. Built in 2017, Viking Sky is 16 years newer — an advantage for travellers seeking modern amenities and design. Seven Seas Mariner edges ahead in service with a passenger-to-crew ratio of 1.6:1, meaning more crew per guest.
Score: 2 – 5
Quick Compare
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Category
Seven Seas Mariner
Viking Sky
Size
48,075 GT
47,800 GT
Passengers
700
930
Year Built
2001
2017
Crew Ratio
1:1.6
1:1.7
Space Ratio
68.7
51.4
Decks
—
—
Length
216m
229m
From Price
$14,199/pp
$9,499/pp
Comparison Verdict
Seven Seas Mariner offers more personal space with a space ratio of 68.7 GT per passenger versus 51.4. Built in 2017, Viking Sky is 16 years newer — an advantage for travellers seeking modern amenities and design. Seven Seas Mariner edges ahead in service with a passenger-to-crew ratio of 1.6:1, meaning more crew per guest.
| Category | Winner |
|---|---|
| Size | Viking Sky |
| Capacity | Viking Sky |
| Modernity | Viking Sky |
| Service | Seven Seas Mariner |
| Spaciousness | Seven Seas Mariner |
| Decks | Tie |
| Length | Viking Sky |
| Fleet Power | Viking Sky |
Bottom line: Viking Sky leads 5–2 across our categories — strongest in Size. Choose Viking Sky for overall superiority; pick Seven Seas Mariner if Service matter more to you.
Which Ship Is Right for You?
Choose Seven Seas Mariner if...
- Size matters to you (48,075 GT)
- Better service ratio (1.6:1 crew ratio)
- More space per guest (68.7 GT/pax)
Choose Viking Sky if...
- You want the newer ship (built 2017, 16yr newer)
- More onboard variety (930 guests)
- Save $4,700/person on sailings
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Frequently Asked Questions
How is the comparison score calculated?
We compute scores across 8 categories using real spec data — gross tonnage, passenger capacity, crew capacity, year built, length, deck count, space ratio, and fleet power. Each category awards one point to the winning ship.
What is the space ratio and why does it matter?
Space ratio is gross tonnage divided by passenger capacity. A higher number means more space per guest. Luxury lines typically score above 40; mass-market ships often fall in the 30-40 range.
What does the passenger-to-crew ratio mean?
Passengers per crew member. Lower is better — more staff per guest means better service. Luxury lines aim below 2:1; large mainstream ships may be 3-4:1.
Are the prices shown accurate?
Prices are sourced from Cruisebound and reflect real-time availability. They may change based on cabin type, date, and demand. Click through to see the latest fares.
Can I compare more than two ships?
Yes — up to four ships. Use the search tool on the compare hub page to add additional ships.
How current is the ship data?
Specifications come from our database of 380+ vessels, revalidated every 5 minutes via ISR. The "Updated" timestamp shows when records were last modified.
